boatgeek
Well-Known Member
- Joined
- Dec 27, 2014
- Messages
- 7,289
- Reaction score
- 7,699
This design appeared first in the Half Baked Designs thread. The concept is a booster with canted fins that spins up during boost, then throws a finless sustainer on to the heavens. 24mm to 18mm with a small (~1") gap stage, likely D12-0 to A8 for the first flight. Despite a great deal of input in the half-baked designs thread that a built up balsa system would be lighter than 3D printed, I liked the ease of 3D printing and I'm willing to accept the loss of performance. The sustainer nose will also be moderately heavily weighted to keep the whole stack stable.
Open questions:
Will the spin be enough to keep the sustainer stable? If not, I'll add canted fins.
Will the booster tumble enough (probably) and have the right drag to weight to tumble recover at a safe speed?
First flights will be at a private launch with heads up on a soft grass field. If it all works then I'll go more aggressive.
I'll add some pics in a day or two (hopefully not boatgeek time!), but you can see a model of the turbo booster in the linked thread above.
Open questions:
Will the spin be enough to keep the sustainer stable? If not, I'll add canted fins.
Will the booster tumble enough (probably) and have the right drag to weight to tumble recover at a safe speed?
First flights will be at a private launch with heads up on a soft grass field. If it all works then I'll go more aggressive.
I'll add some pics in a day or two (hopefully not boatgeek time!), but you can see a model of the turbo booster in the linked thread above.